1. From Otologic Associates and The University of Texas Health Science Center at San Antonio, Fitzsimons Medical Center, Aurora.
2. From the Department of Laboratory Animal Medicine Uniformed Services, University of the Health Sciences, Fitzsimons Medical Center, Aurora.
3. From the Division of Neurosurgery, University of Connecticut, Fitzsimons Medical Center, Aurora.
4. From the Department of Pathology, Fitzsimons Medical Center, Aurora.